package com.tongming.manga.cusview;

import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapShader;
import android.graphics.Canvas;
import android.graphics.Paint;

import com.bumptech.glide.load.engine.bitmap_recycle.BitmapPool;
import com.bumptech.glide.load.resource.bitmap.BitmapTransformation;

/**
 * Created by Tongming on 2016/4/15.
 */
public class GlideGircleTransform extends BitmapTransformation {
    public GlideGircleTransform(Context context) {
        super(context);
    }

    public GlideGircleTransform(BitmapPool bitmapPool) {
        super(bitmapPool);
    }

    @Override
    protected Bitmap transform(BitmapPool pool, Bitmap toTransform, int outWidth, int outHeight) {
        return circleCrop(pool, toTransform);
    }

    private static Bitmap circleCrop(BitmapPool pool, Bitmap source) {
        if (source == null) {
            return null;
        }
        int size = Math.min(source.getWidth(), source.getHeight());
        int x = (source.getWidth() - size) / 2;
        int y = (source.getHeight() - size) / 2;

        Bitmap squared = Bitmap.createBitmap(source,x,y,size,size);

        Bitmap result = pool.get(size,size,Bitmap.Config.ARGB_8888);
        if(result==null){
            result = Bitmap.createBitmap(size,size,Bitmap.Config.ARGB_8888);
        }

        Canvas canvas = new Canvas(result);
        Paint paint = new Paint();
        paint.setShader(new BitmapShader(squared,BitmapShader.TileMode.CLAMP,BitmapShader.TileMode.REPEAT));
        paint.setAntiAlias(true);
        float r = size/2f;
        canvas.drawCircle(r,r,r,paint);
        return result;
    }

    @Override
    public String getId() {
        return getClass().getName();
    }
}
